| Term | Definition |
| morbid | diseased unhealthy (e.g.. about ideas) |
| morose | ill-tempered unsocial |
| muffler | cloth worn round the neck/silencer |
| multifarious | varied motley greatly diversified |
| mundane | worldly as opposed to spiritual commonplace everyday |
| myriad | very great number |
| nadir | lowest weakest point |
| nascent | coming into existence emerging |
| nebulous | cloud-like hazy vague indistinct |
| negligent | taking too little care |
| neophyte | person who has been converted to a belief |
| nexus | a connection tie or link |
| nibble | show some inclination to accept (an offer) |
| noisome | offensive disgusting (smell) |
| nonchalant | not having interest |
| nonplused | greatly surprised |
| nostrum | a quack remedy an untested cure |
| noxious | harmful |
| nugatory | trifling/worthless |
| obdurate | hardened and unrepenting stubborn inflexible |
| obfuscate | to darken make obscure muddle |
| oblivious | unaware having no memory |
| obloquy | abusively detractive language sharp criticism vituperation |
| obsequious | too eager to obey or serve |
| obstreperous | noisy loud |
| obtain | to be established accepted or customary |
| obtrusive | projecting prominent undesirably noticeable |
| obtuse | blunt/stupid |
| obviate | to make unnecessary get rid of |
| occluded | blocked up |
| odious | repulsive hateful |
| odium | contempt dislike aversion |
| odor | smell favor reputation |
| officious | too eager or ready to help offer advice |
| ominous | threatening |
| onerous | needing effort burdensome |
| opaqueness | dullness/not allowing light to pass through |
| opprobrious | showing scorn or reproach |
| ossify | to turn to bone to settle rigidly into an idea |
| ostensible | seeming appearing as such professed |
| ostentation | display to obtain admiration or envy |
| ostracism | shut out from society refuse to meet talk |
| overhaul | examine thoroughly to learn about the condition |
| overweening | presumptuously arrogant overbearing immoderate being a jerk |
| paean | song of praise or triumph |
| palate | roof of the mouth sense of taste |
| palatial | magnificent |
| palliate | lessen the severity of |
| palpability | can be felt touched understood |
| palpitate | tremble beat rapidly and irregularly |
| panegyric | formal praise eulogy |
| paradigm | a model example or pattern |
| parenthesis | sentence within another one something separated |
| pariah | an outcast a rejected and despised person |
| parley | negotiation, discussion between enemies |
| parsimonious | too economical miserly |
| partisan | one-sided committed to a party biased or prejudiced |
| patron | regular customer person who gives support |
| paucity | scarcity a lacking of |
| peccadillo | small sin small weakness in one's character |
| pedantic | bookish showing off learning |
| pedestrian | commonplace trite unremarkable |
| pellucid | transparent easy to understand |
| penchant | strong inclination a liking |
| penitent | feeling or showing regret |
| penurious | poor/stingy |
| penury | extreme poverty |
| peregrination | traveling about wandering |
| peremptory | urgent imperative unchallengeable ending debate |
| perfidious | treacherous faithless |
| perfidy | treachery breaking of faith |
| perfunctory | done as a duty without care |
| perilous | dangerous |
| peripatetic | wandering |
| perish | be destroyed decay |
| perjury | willful FALSE statement unlawful act |
| permeate | spread into every part of |
| pernicious | harmful injurious |
| perpetrate | be guilty commit (a crime) |
| personable | pleasing in appearance attractive |
| perspicacity | quick judging and understanding |
| pertain | belong as a part have reference |
| pest | destructive thing or a person who is nuisance |
| petrified | taken away power (to think feel act) |
| petrify | to make hard rocklike |
| petrous | like a rock hard stony |
| petulant | unreasonably impatient |
| philistine | a smug ignorant person one who lacks knowledge |
| phlegmatic | calm sluggish temperament unemotional |
| picaresque | involving clever rogues or adventurers |
| pied | of mixed colors |
| pinch | be too tight take between the thumb and finger |
| pine | waste away through sorrow or illness |
| pious | dutiful to parents devoted to religion |
| piquant | agreeably pungent stimulating |
| pique | hurt the pride or self-respect stir (curiosity) |
| pitfall | covered hole as a trap unsuspected danger |
| pith | essential part force soft liquid substance |
| pivotal | of great importance (others depend on it) |
| placate | soothe pacify calm |